We are thinking of options for renovating our home for our DMD son. We are choosing between adding a newly constructed downstairs room and bathroom, vs adding an elevator and using an existing room upstairs and building accessable bathrooms both up and downstairs. Does anyone know if we will need to reinforce the flooring upstairs (or to existing floors downstairs) to accomidate the weight of a power chair. If so how involved and costly is the process this? Our son is still ambulatory , but we are trying to plan ahead to avoid continuous remodeling.